Fig. 50-24. The right sympathetic trunk in the neck, lateral aspect. Only cervical nerves 1 to 5 are shown. The numerals on the left side of the drawing refer to those cervical and thoracic nerves to which rami communicantes (postganglionic fibers) are given. The numerals on the right side refer to the cervical vertebrae. The subclavian (in transverse section) and vertebral arteries are shown. Click for high resolution image.